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[Java教程]SpringMVC_HelloWorld_01


通过配置文件的方式实现一个简单的HelloWorld。

一、新建项目

1、新建动态web项目

2、命名工程springmvc-01

3、勾选"Generate web.

4、导入jar包

5、新建springmvc配置文件

6、命名配置文件springmvc-servlet.命名规则:<servlet-name>-servlet.

默认路径为:/WEB-INF/springmvc_servlet.

7、选择命名空间

8、完成

二、配置文件

1、配置web.
<??><web-app ="http://www.w3.org/2001/  ="http://java.sun.com/  xsi:schemaLocation="http://java.sun.com/  id="WebApp_ID" version="3.0"> <!-- The front controller of this Spring Web application, responsible for handling all application requests -->  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <load-on-startup>1</load-on-startup>  </servlet>  <!-- Map all requests to the DispatcherServlet for handling -->  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>

2、配置springmvc-servlet.
<??><beans ="http://www.springframework.org/schema/beans"  ="http://www.w3.org/2001/ ="http://www.springframework.org/schema/context"  ="http://www.springframework.org/schema/mvc"  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">  <!-- 配置HandlerMapping,根据BeanName找到对应的Controller -->  <bean class="org.springframework.web.servlet.mvc.support.ControllerBeanNameHandlerMapping"></bean>    <!-- 配置Controller,响应mvc请求 -->  <bean name="/mvc" class="com.zhy.controllers.HelloWorldController"></bean>    <!-- 配置视图解析器 -->  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">    <!-- 配置前缀 -->    <property name="prefix" value="/WEB-INF/views/"></property>    <!-- 配置后缀 -->    <property name="suffix" value=".jsp"></property>  </bean></beans>

三、编写Controller

package com.zhy.controllers;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.Controller;public class HelloWorldController implements Controller {  /*   * 通过视图解析器(ViewResolver)得到实际的物理视图   * 视图解析器的解析规则:prefix + viewname + suffix   * 结合本实例,视图解析器的解析出来的物理视图为:/WEB-INF/views/helloworld.jsp   * */  @Override  public ModelAndView handleRequest(HttpServletRequest arg0, HttpServletResponse arg1) throws Exception {    // TODO Auto-generated method stub    System.out.println("call controller");    return new ModelAndView("helloworld");  }}

四、新建jsp页面

1、新建helloworld.jsp,路径:WEB-INF/views/helloworld.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"  pageEncoding="ISO-8859-1"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Insert title here</title></head><body>  <h1>Hello World!</h1></body></html>

2、新建index.jsp,路径:WEB-INF/index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"  pageEncoding="ISO-8859-1"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Insert title here</title></head><body>  <a href="mvc">hello world</a></body></html>

3、完成

四、运行